305513242 has 4 divisors (see below), whose sum is σ = 458269866. Its totient is φ = 152756620.

The previous prime is 305513227. The next prime is 305513261. The reversal of 305513242 is 242315503.

305513242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 199402641 + 106110601 = 14121^2 + 10301^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76378309 + ... + 76378312.

Almost surely, 2^305513242 is an apocalyptic number.

305513242 is a deficient number, since it is larger than the sum of its proper divisors (152756624).

305513242 is a wasteful number, since it uses less digits than its factorization.

305513242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152756623.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 305513242 is about 17478.9370958305. The cubic root of 305513242 is about 673.5089112319.

Adding to 305513242 its reverse (242315503), we get a palindrome (547828745).

The spelling of 305513242 in words is "three hundred five million, five hundred thirteen thousand, two hundred forty-two".